Helium balloon at a pressure, Chemistry

A 10L helium balloon at a pressure of two bar at 27C. Some O2 is now inside in balloon and final volume is made 30L. the pressure also fell to 1 bar at similar temperature. the partial pressure of O2 at end is?

Solution) For helium.

 n(He)=P(1)V(1)/RT.
for oxygen n(O)=P(2)V(2)/RT

partial pressure of O2= (mole fraction of O2).(Total pressure)

= [  P(2).V(2) / P(2).V(2) + P(1).V(1)  ].(1)
= 1.30 / 1.30 + 2.10
=30/30+20=3/5 bar
Hence 0.6 bar (ANS)

Posted Date: 3/30/2013 12:57:31 AM | Location : United States







Related Discussions:- Helium balloon at a pressure, Assignment Help, Ask Question on Helium balloon at a pressure, Get Answer, Expert's Help, Helium balloon at a pressure Discussions

Write discussion on Helium balloon at a pressure
Your posts are moderated
Related Questions
how to calculate the equivalent weight of an ion

write the different units of hardness with their relationship

Aromatic Nitro Compounds Aromatic nitro compounds are the derivatives of aromatic hydrocarbons where one or more hydrogen atom (s) of the benzene nucleus has been changed by ni

What are the basic physical and chemical properties of this group

Q. Example on Law of Conservation of Mass? A slim strip of iron with a mass of 15.72 g is placed in to a solution containing 21.12 g of copper and copper (II) sulphate begins t

advantages and disadvantages of westron

The nucleus of an atom can be assumed to be spherical. The radius of the nucleus of mass number 7  is given by 1.25x 10 -13 A 1/3 cm  Radius of atom is one A. If the mass number

The third line in Balmer series corresponds to an electronic transition between which Bohr's orbits in hydrogen: (1) 5 → 3               (2) 5 → 2      (3) 4→ 3

what are the limitations of third law of thermodynamics. what is thermodynamics third law.